Telescopic boom crane



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Filed Feb. 5. 1968 I IN V ENTQR HRTHUR IHHULOTTE United States Patent C) 3,469,712 TELESCOPIC BOOM CRANE Arthur Haulotte, 21 Rue Duguesclin, Lyon, Rhone, France Filed Feb. 5, 1968, Ser. No. 703,042

Claims priority, application France, Feb. 10, 1967, 9,478; Dec. 12, 1967, 131,904

Int. Cl. B66c 23/06 US. Cl. 21255 4 Claims ABSTRACT OF THE DISCLOSURE chain which serves to operate the inner telescopic member is connected to the boom casing by detachable fastening means so that said cable or chain can be selectively attached either to said boom casing or to the intermediate sliding member in order that the inner sliding member which has the lowest strength is not subjected to bending stresses when the boom is not extended to its maximum reach. Safety means are provided in order to prevent one of the telescopic members from moving back abruptly in the event of a break in the cable or chain. The lifting hook carried by the cable which is suspended by means of a guide pulley from the front end of the inner telescopic member is maintained at the same level even during the movements of outward travel or of withdrawal of the telescopic boom.

The present invention relates to cranes of the type in which the telescopic boom is constituted by a number of tubular members of decreasing cross-section which are slidably mounted within each other, and in which the outer member constitutes a boom casing which is pivotally mounted on a horizontal axis carried by the frame of the crane, whilst the inner member carries at its front extremity the guide pulley which supports the liftinghook cable, the outward travel and withdrawal of at least the inner member of the boom being carried out by means of a system of endless flexible ties (cables or chains), one point of which is attached to said inner member and which passes over two pulleys mounted respectively at the two extremities of the second member located immediately around the inner member, another point of said endless tie being attached to the third member which surrounds the second member.

One object of the invention is to provide a crane of this type in which the inner sliding member of the telescopic boom which has the lowest strength is not subjected to bending stresses when the boom is not extended to its maximum reach.

To this end, and in accordance with a first feature of the invention, the endless operating cable or chain of the inner member of the boom is connected to the third member of the boom by removable fastening means whereby said cable can be selectively connected either to said third member or to said second member.

In this particular system, when said cable is attached to the second member of the crane boom, the inner member of the boom is secured to said second member irrespective of the conditions of extension of the other members of the boom. This result is of particular interest when the crane employed has a medium lifting capacity and reach inasmuch as the inner member of the boom is in such cases not subjected to stress by reason of the fact that the entire length of said member is housed within the surrounding member. In addition, said inner member even enhances the strength of said second member. The principle of this system is in any case applicable regardless of the number of telescopic members considered.

If the cable referred-to is attached to the above-mentioned third member of the crane boom, all three members considered accordingly slide relative to each other and the full reach of the crane boom can in that case be employed to advantage for a smaller corresponding hoisting capacity.

A further object of the invention is to provide a crane of the above-mentioned type in which the cable which serves to operate the intermediate member of the boom relative to the boom casing is of minimum length and is not required to pass over pulleys.

To this end, in accordance with a second feature of the invention, a cable or chain which is attached at both extremities respectively to the two extremities of the intermediate member is passed over a driving winch carried by the outer member or boom casing.

A further object of the invention is to provide a crane of the type aforesaid which comprises safety means adapted to prevent one of the telescopic members of the boom from moving back abruptly under the action of gravity in the event that the flexible tie which operates said member were to break.

To this end, in accordance with a third feature of the invention, the flexible tie which operates an inner telescopic member is attached to the rear end of said member by means of a safety component which is adapted to move on said member and provided with a tooth which is capable of engaging under the action of gravity and/or of a spring with teeth or aligned slots of the telescopic member in which the telescopic member considered is slidably mounted when tractive force is no longer exerted by said tie.

A further object of the invention is to provide a crane of the above-mentioned type in which the lifting hook carried by the cable which is suspended from the extremity of the boom is maintained at the same level even during the movements of outward travel or of withdrawal of the telescopic boom.

To this end, and in accordance with a fourth feature of the invention, the lifting cable is guided between'the extremity thereof which is wound on the stationary winch and the opposite extremity thereof over guide members disposed in such a manner that the sum of variations in length of the sections of the lifting cable between its two extremities as produced by the displacement of the telescopic members of the boom relative to the stationary member or boom casing on the one hand and relative to each other on the other hand is equal to zero.

A better understanding of the invention will be gained from the following description and from a study of the accompanying drawings which illustrate :a few embodiments of an improved telescopic boom crane in accordance with the invention.

In these drawings:

FIG. 1 is a longitudinal vertical sectional view of the complete boom of a telescopic crane which is endowed with the two first features mentioned above;

FIG. 2 shows one embodiment of the safety system which has also been referred to in the foregoing;

FIG. 3 is a longitudinal sectional view of a telescopic boom for a crane illustrating an alternate embodiment to the one shown in FIG. 1;

FIG. 4 is a longitudinal section view of a telescopic boom for a crane illustrating still another arrangement of attaching the lifting cable to the boom; and

FIG. 5 is a perspective view of a telescopic boom for a crane and the control arrangement for operating the boom which embodies the present invention and illustrates a further embodiment of the attachment of the lifting cable to the boom.

The telescopic crane boom which is illustrated in FIG. 1 comprises three telescopic members which are capable of sliding relative to each other, namely: an inner member, an intermediate member and an outer member or boom casing 3. The boom casing 3 is adapted to pivot on a pin 2 carried by a frame 1 and the angle of inclination of said casing is set by means of a jack 41. The cable 38 which is fitted with a load-lifting hook is passed over an idler pulley 41 mounted on a shaft 42 which is fixed in the front extremity of the inner tubular member 9 of the boom.

The system which serves to control the sliding motion of the intermediate member 8 within the boom casing 3 comprises a flexible tie 51 such as a cable or a chain which is attached at both ends respectively to two lugs 52, 53, said lugs being rigidly fixed to the two extremities of the intermediate tubular member 8.

Said tie 51, which is a chain in the exemplified embodiment, is passed over a sprocket 55 carried by the output shaft 56 of an electric reduction-gear motor which is generally designated by the reference 57 and mounted on the top of the front portion of the boom casing 3. Two rollers 58, 59 serve to maintain the chain 51 in closely meshing relation with the driving sprocket 55.

A recess 62 which is formed in the top wall of the boom casing 3 makes it possible for the drive chain 51 to pass from the interior of the boom casing inasmuch as it is fixed to the intermediate member 8 to the exterior of said casing in which the reduction-gear drive unit 57 is located. One of the ends of the chain is attached to the intermediate member, for example to the lug 53, by means of a springloaded system 63 which always maintains the chain under correct tension in spite of the small elongations to which said chain is liable to be subjected in service.

Depending on whether the reduction-gear motor 57 is caused to rotate either in one direction or in the other, the chain 51 is caused to run along the boom casing, either in the direction of outward travel of the intermediate member 8 or in the direction of withdrawal of this latter.

It would in any case be possible to replace this rectilineal cable or chain drive system by any other equivalent system such as, for example, a mechanical system comprising a rack or added teeth, or alternatively a jack system such as a hydraulic jack.

Furthermore, it would also be possible to place the reduction-gear motor 57 is another position on the boom casing, for example on a lateral face of this latter or on the underface.

The movement of displacement of the inner member 9 with respect to the intermediate member 8 of the boom is controlled by means of an endless cable or chain 21 which is passed over two idler pulleys 22, 23 carried by pins 24, 25 which are mounted respectively at the two extremities of said intermediate member 8. One of the lengths of the cable is passed between the boom casing and said intermediate member, whilst the other length is passed between the intermediate member and the inner member 9. One point of the cable 21 is attached at 28 to the inner member 9 of the boom whilst another point of said cable is attached at 27 to the front extremity of the boom casin 3.

When the intermediate member 8 is caused to slide within the boom casing 3 by means of the chain system 51, the inner member 9 is automatically caused to move at the same speed with respect to the intermediate member 8 and consequently at twice the speed with respect to the boom casing 3.

Under these conditions, when the crane is operated under a relatively substantial load and the boom is not fully extended, the front portion of the inner member 9 automatically overhangs beyond the front end of the intermediate member 8 to the same extent as the front end of said intermediate member 8 overhangs beyond the front end of the boom casing 3. In consequence, the inner member 9 of the boom is subjected to higher working stress than the intermediate member 8 which is necessarily of larger cross-sectional area inasmuch as it surrounds the inner member 9.

In order to overcome this disadvantage, provision is made in this example for means whereby the cable 21 is detachably fastened to the lug 27 of the boom casing so that, should it be found desirable to do so, this connection may be dispensed with and the cable 21 attached to a lug 27A of the intermediate member 8; the cable 21 then assumes the configuration which is shown in chain-dotted lines in the drawing.

Under these conditions, the cable 1 is secured to the intermediate member 8, with the result that the inner member 9 of the boom which is attached at 28 to said cable 21 is in turn secured to the intermediate member 8. When the intermediate member 8 is extended to any desired distance beyond the boom casing by means of the operating chain system 51, the inner member 9 still remains fully withdrawn inside said intermediate member 8. The sliding portion of the boom is therefore in that case composed of the assembly of both members 8 and 9 which consequently work under bending stress under the best possible conditions, which is highly advantageous when the crane is employed for lifting heavy loads with a small working radius.

In FIG. 2 there is shown an embodiment of a safety system which is adapted to prevent telescopic members, in this case the member 8, from returning abruptly into the boom casing 3 under the action of gravity, in which case the,cable 51 which operates said member would break.

The system under consideration comprises a lever 71 which is pivotally mounted on the bottom edge of the rear end of the telescopic member 8 by means of a horizontal hinge-pin 72. Said lever 71 comprises a long arm 71A which extends upwards and is applied against the top edge of the extremity of said elescopic member 8 under the tractive force exerted by the cable 51 which is attached to the extremity of said arm 71A instead of being attached directly to the member 8 as in the embodiment which is illustrated in FIG. 1.

The other arm 71B of the lever 71 forms a tooth which is intended to cooperate with slots 73 formed in the bottom wall of the boom casing 3 within which the telescopic member 8 is slidably mounted, said slots being aligned so that the tooth 71B passes in front of each slot in turn when the telescopic member 8 moves progressively out of the boom casing 3 under the action of the operating cable 51.

Under normal operating conditions, the cable 51 therefore maintains the extremity of the arm 71A of the pivotal lever 71 applied against the top edge of the rear extremity of the boom casing 8. However, should a break occur in the cable 51, the lever 71 then performs a pivotal motion under the action of its own weight in the direction of the arrow 1 about its hinge-pin 72, with the result that the tooth 71B comes to rest against the internal face of the bottom wall of the boom casing 3 and that, as soon as the cable breaks, the telescopic member 8 and all the components carried by said member including any load tend to cause said lever to move down again under the action of gravity; but the tooth 71B then engages in the first slot 73 of the boom casing 3 which is encountered and prevents any further dangerous downward motion.

It has been assumed that, in the event of rupture of the cable 51, the lever 71 pivots simply under the action of its own weight, but this pivotal motion could be initiated or assisted by a suitably disposed spring.

As is readily apparent, it would be possible to adopt a similar safety system for each of the telescopic members,

said safety system being supported within the member in which the telescopic member considered is directly intended to slide.

It would also be possible to adopt any number of telescopic members for the purpose of forming the boom and to employ any combination of the desired means for the relative displacements of said members.

In the embodiment which is illustrated in FIG. 3 which shows only the telescopic boom and in which members which are similar to the members illustrated in FIGS. 1 and 2 are designated by the same reference numerals, the boom comprises a stationary boom casing 3, an intermediate telescopic member 8 and an inner telescopic member 9.

The extremities of a drive chain 51 which passes over a drive sprocket 55 mounted on the stationary boom casing 2 are anchored directly to a lug 52 and, by means of a spring 63, to a lug 53, the lugs 52 and 53 being carried by the intermediate telescopic member 8.

A winch 70 mounted on a platform 71 which is rigidly fixed to the stationary boom casing 3 serves to operate a lifting cable, the different sections of which are designated by the references 72a, 72b, 72c and 72d, and which is passed over a guide pulley 73 mounted on the stationary boom casing 3, over a pully 74 mounted at the inner extremity of the intermediate telescopic member 8, over a guide pulley 75 mounted at the outer extremity of the inner telescopic member 9, and finally terminates at the lifting hook 76.

As in the embodiment of FIG. 1, an operating cable 21 of the telescopic boom 38-9 is passed over two idler pulleys 22, 23 carried by pins 24, 25 which are mounted respectively at the two extremities of the intermediate member 8. One of the lengths of the cable 21 is passed between the boom casing 3 and said intermediate member whilst the other length is passed between this latter and the inner member 9. One point of the cable 21 which has a closed loop configuration is attached at 28 to the inner member 9 whilst another point of the cable can be attached either at 27 to the boom casing 3 or at 27a to the intermediate member 8.

As has been explained in the foregoing, when the extremity of the cable 21 is attached at 27, the movement of displacement of the intermediate telescopic member 8 with-respect to the stationary boom casing 3 by means of the drive sprocket 55 produces simultaneously the movement of displacement of the inner telescopic member 9 relative to the intermediate telescopic member 8. On the other hand, at the time of attachment of the cable 21 at 27a, the movement of displacement of the intermediate telescopic member 8 by means of the drive sprocket 55 is not accompanied by any movement of displacement of the inner telescopic member 9 relative to the intermediate telescopic member 8, with the result that the two telescopic members move together relative to the stationary boom casing 3.

The embodiment which is illustrated in FIG. 3 operates as follows:

As already explained in the foregoing, the intermediate telescopic member 8 can be moved out of the stationary boom casing 3 or withdrawn into this latter by producing the movement of rotation of the drive sprocket 55 in the corresponding direction. By means of the operating cable 21 which is coupled to the inner telescopic member 9 at 28, the movement of outward travel of the intermediate member 8 also produces the movement of outward travel of said inner member.

In known constructions of the type employed heretofore, the above-mentioned movement of outward travel of the telescopic members of the boom also had the effect of modifying the height of the lifting hook by reason of the modification of the distance between the hook which took part in the movement of the telescopic members and the stationary winch.

This disadvantage is prevented by the arrangement which is illustrated in FIG. 3. In fact, at the time of outward extension of the telescopic members 8 and 9, the section 72a of the lifting cable which is located between the winch 70 and the guide pulley 73 remains unchanged, the section 72b located between said guide pulley 73 and the guide pulley 74 which is mounted on the intermediate telescopic member 8 becomes shorter, whilst the section 72c located between said guide pulley 74 and the guide pulley 75 which is mounted on the inner telescopic member 9 becomes longer by an amount which is equal to the extent of reduction in length of the section 72b, with the result that the length of the section 72d between the guide pulley 75 and the hook 76 remains unchanged. In consequence, the hook 76 always remains at the same level in spite of the movement of displacement of the telescopic members 8 and 9.

Lifting or lowering of the load is accordingly controlled by operation of the winch 70.

As stated earlier, when the cable 21 is fastened at 27 to the stationary boom casing 3, actuation of the drive sprocket 55 produces simultaneously the outward travel of the intermediate telescopic member 8 from the boom casing 3 on the one hand and of the inner telescopic member 9 from the intermediate telescopic member 8 on the other hand.

FIG. 4, in which is shown solely the guiding system of the lifting cable, is concerned with the other possible mode of operation in which the cable 21 (as shown in FIG. 3) is attached at 27a to the intermediate telescopic member 8, with the result that the actuation of the drive sprocket 55 causes the outward displacement of the telescopic members 8 and 9 from the boom casing 3 without modifying the relative positions of said telescopic members. In this case, the system of guide pulleys 73, 74, 75 of FIG. 3 is completed by a pulley 77 mounted in a pulley block which carries the lifting hook 76, and a guide pulley 78 which is mounted on the inner telescopic member 9, the extremity of the lifting cable being anchored at 79 to the stationary boom casing 3.

The system described above operates as follows: at the time of actuation of the drive sprocket 55 (shown in FIG. 3) in the corresponding direction, the telescopic members 8 and 9 move out of the stationary boom casing 3 without changing their relative positions. The section 72a of the lifting cable which is located between the winch 70 and the guide pulley 72 which is mounted on the stationary boom casing 3 accordingly remains unchanged, the section 72b which is located between the guide pulley 73 and the guide pulley 74 which is mounted on the intermediate telescopic member 8 becomes shorter and the section 720 which is located between the guide pulley 74 which is mounted on the intermediate telescopic member 8 and the guide pulley 75 which. is mounted on the inner telescopic member 9 remains unchanged inasmuch as the relative position of these two telescopic members remains unchanged. On the other hand, the length of the section 72] which is located between the point of attachment 79 to the stationary boom casing 3 and the guide pulley 78 which is mounted on the inner telescopic member 9 increases by an amount which is equal to the extent of reduction of the section 72b, with the result that the sum of all the sections of the lifting cable remains unchanged, the effect thereby produced being that the lengths of the sections 72d and 72a also remain unchanged. The hook 76 therefore remains at the same level in spite of the displacement of the telescopic members 8 and 9.

3 on the one hand and relative to each other on the other hand, the lifting hook 76 does not need to be attached directly to the end of the lifting cable as shown in FIG. 3, but use can also be made of a pulley-block rig. This case is illustrated in FIG. 5, in which the hook 76 is attached to a pulley block 80 containing a guide pulley (not shown in the drawings) over which is passed the lifting cable 72, the end of which is thus anchored at 81 to the inner telescopic member 9.

As is readily apparent, the embodiments described in the foregoing and illustrated in the accompanying drawings are given solely by way of non-limitative example and it is understood that the form, nature, arrangement and mode of assembly of their members can be modified in any suitable manner without thereby departing from the scope or the spirit of the invention.

What is claimed is:

1. A crane comprising a support frame, a horizontal pin mounted on said frame, a telescopic boom formed of a plurality of tubular members comprising an inner member, an intermediate member and an outer member, said intermediate member and inner member having decreasing transverse cross sections relative to said outer member and said tubular members being adapted to slide within one another, said outer member is mounted on said horizontal pin for pivotal movement thereon and forms a boom casing, each of said tubular members having an inner end and an outer end so that in the telescoped position the inner ends are adjacent said horizontal pin and the outer ends are remote from said horizontal pin, a guide pulley aflixed to the outer end of said inner member, a lifting hook, a lifting cable having said lifting hook affixed thereon and passing over said guide pulley, a first connection member located at the inner end of said inner member, a second connection member located at the outer end of said intermediate member, and a third connection member located at the outer end of said outer member, a pair of auxiliary pulleys one attached to the inner end and the other attached to the outer end of said intermediate member, an endless flexible tie system attached at one point to said first connection member on said inner member and passing over said auxiliary pulleys located at the opposite ends of said intermediate member and being detachably fastened at another point to one of said second connection member on said intermediate member and said third connection member on said outer member, means mounted on said boom for moving said intermediate member outwardly and inwardly relative to said outer member, and said endless flexible tie system being adapted to produce the outward and inward travel of said inner member in response to the corresponding outward and inward movement of said intermediate member when said endless flexible tie is fastened to said third connection member on said outer member and when said endless flexible tie is fastened to said second connection member on said intermediate member, said inner member remaining positioned within said intermediate member.

2. A crane comprising a support frame, a horizontal pin mounted on said frame, a telescopic boom formed of a plurality of tubular members comprising an inner member, an intermediate member and an outer member, said intermediate member and inner member having decreasing transverse cross sections relative to said outer member and said tubular members being adapted to slide within one another, said outer member is mounted on said horizontal pin for pivotal movement thereon and forms a boom casing, each of said tubular members having an inner end and an outer end so that in the telescoped position the inner ends are adjacent said horizontal pin and the outer ends are remote from said horizontal pin, a guide pulley affixed to the outer end of said inner member, a lifting hook, a lifting cable having said lifting hook aflixed thereon and passing over said guide pulley, a first connection member located at the inner end of said inner member, a second connection member located at the outer end of said intermediate member, and a third connection member located at the outer end of said outer member, a pair of auxiliary pulleys one attached to the inner end and the other attached to the outer end of said intermediate member, an endless flexible tie system attached at one point to said first connection member on said inner member and passing over said auxiliary pulleys located the opposite ends of said intermediate member and being detachably fastened at another point to one of said second connection member on said intermediate member and said third connection member on said outer member, a drive member mounted on said outer member, a flexible tie member secured at one end to the inner end of said intermediate member and'at the other end to the outer end of said intermediate member, said flexible tie arranged in operative engagement with said drive member for moving said intermediate member inwardly and outwardly relative to said outer member, and said endless flexible tie system being adapted to produce the outward and inward travel of said inner member in response to the corresponding outward and inward movement of said intermediate member when said endless flexible tie is fastened to said third connection member on said outer member and when said endless flexible tie is fastened to said second connection member on said intermediate member said inner member remaining positioned within said intermediate member. 1

3. A crane comprising a support frame, a horizontal pin mounted on said frame, a telescopic boom formed of a plurality of tubular members comprising an inner member, an intermediate member and an outer member, said intermediate member and inner member having decreasing transverse cross sections relative to said outer member and said tubular members being adapted to slide within one another, said outer member is mounted on said horizontal pin for pivotal movement thereon and forms a boom casing, each of said tubular members having an inner end and an outer end so that in the telescoped position the inner ends are adjacent said horizontal pin and the outer ends are remote from said horizontal pin, a guide pulley affixed to the outer end of said inner member, a lifting hook, a lifting cable having said lifting hook afiixed thereon and passing over said guide pulley, a first connection member located at the inner end of said inner member, a second connection member located at the outer end of said intermediate member, and a third connection member located at the outer end of said outer member, a pair of auxiliary pulleys one attached to the inner end and the other attached to the outer end of said intermediate member, an endless flexible tie system attached at one point to said first connection member on said inner member and passing over said auxiliary pulleys located at the opposite ends of said intermediate member and being detachably fastened at another point to one of said second connection member on said intermediate member and said third connection member on said outer member, said endless flexible tie system being adapted to produce selectively the outward and inward travel of said inner member in response to the corresponding outward and inward movement of said intermediate member, and a lever member pivotally attached to the inner end of said intermediate member, said lever member comprising a first arm and a second arm, said first arm extending transversely across the end of said intermediate member from said point or pivotal attachment thereto, said second arm extending from said point of pivotal attachment outwardly toward the innersurface of said outer member, drive means mounted on said outer member, a flexible tie secured at one end to the outer end of said intermediate member and secured at its other end to the end of said first arm of said lever remote from the point of pivotal attachment of said lever to said intermediate member, said flexible tie being operatively engaged with said drive member for displacing said. in-

termediate member inwardly and outwardly relative to said outer member, and means formed in the interior surface of said outer member adjacent the end of said second arm of said lever remote from said point of pivotal attachment thereof to said intermediate member for effecting a locking engagement between the end of said second arm of said locking lever and said means when said lever pivots about the end of said intermediate member as a result of a failure in the flexible tie secured to the first arm of said lever.

4. A crane comprising a support frame, a horizontal pin mounted on said frame, a telescopic boom formed of a plurality of tubular members comprising an inner member, an intermediate member and an outer member, said intermediate member and inner member having decreasing transverse cross sections relative to said outer member and said tubular members being adapted to slide within one another, said outer member is mounted on said horizontal pin for pivotal movement thereon and forms a boom casing, each of said tubular members having an inner end and an outer end so that in the telescoped position the inner ends are adjacent said horizontal pin and the outer ends are remote from said horizontal pin, a guide pulley affixed to the outer end of said inner member, a lifting hook, a lifting cable having said lifting hook afiixed thereon and passing over said guide pulley, a first connection member located at the inner end of said inner member, a second connection member located at the outer end of said intermediate member, and a third connection located at the outer end of said outer member, a pair of auxiliary pulleys one attached to the inner end and the other attached to the outer end of said intermediate member, an endless flexible tie system attached at one point to said first connection member on said inner member and passing over said auxiliary pulleys located at the opposite ends of said intermediate member and being detachably fastened at another point to one of said second connection member on said intermediate member and said third connection member on said outer member, means mounted on said boom for moving said intermediate member outwardly and inwardly relative to said outer member, and said endless flexible tie system being adapted to produce selectively the outward and inward travel of said inner member in response to the corresponding outward and inward movement of said intermediate member, a lifting winch mounted on said outer member, a guide pulley mounted on said outer member, a guide pulley mounted on the inner end of said intermediate member, and said lifting cable being wrapped around said lifting winch and extending over the guide pulley on said outer member thence over the guide pulley on the inner end of said intermediate member and finally over the guide pulley at the outer end of said inner member whereby the total length of said lifting cable from said lifting Winch to said pulley at the outer end of said inner member remains unchanged during the positioning of said inner and intermediate members relative to said outer member.

References Cited UNITED STATES PATENTS 2,896,750 7/1959 Eitel 212 55 2,919,036 12/1959 Raymond 212 3,396,601 8/1968 Wright 212 FOREIGN PATENTS 1,492,931 7/1967 France.

ANDRES H. NIELSEN, Primary Examiner 

